DRAG SPECIALTIES Charger Optimate 1 Duo TM-613

Dead batteries are a racer's nightmare—whether you're storing a vehicle between seasons or maintaining a fleet of machines. The DRAG SPECIALTIES Charger Optimate 1 Duo TM-613 keeps any 12V lead-acid or lithium battery in peak condition with a fully automated four-step charging program, eliminating the guesswork and preventing sulfation that kills batteries prematurely. This is the kind of preventative maintenance that separates professionals from amateurs.

Compatible with battery capacities ranging from 2Ah to 20Ah, the TM-613 delivers consistent 600mA charging current and features a low-voltage start at just 4V—critical for reviving deeply discharged batteries that other chargers won't touch. Bolt it into your shop, garage, or pit area and forget about it. The unit handles the rest.

• Maintains 12V lead-acid batteries
• Maintains 12.8V lithium batteries
• Capacity range: 2Ah–20Ah
• Constant 600mA output
• Low-volt start: 4V
• Four-step program
• Fully automatic operation
• MPN: TM-613